Shuttle checking mechanism



Aug. 29, 1933' .A. A. GORDON 1,924,186

SHUTTLE CHECKING MECHANISM Filed Dec. 30. 1931 2 Sheets-Sheet l Aug. 29, 1933. A. A. GORDON SHUTTLE CHECKING MECHANISM Filed Dec. 50, 1931 2 Sheets-Sheet 2 J/ZM/Zfan A? 4 W22 l abefore the shuttle is ag'ainpicked.

Patented Aug. 29, 1933 'suur'rm onscnme nmonsmsm Albert A.;Gor don,- W-oroester,. .assignorito Crompton r&Knowles=-Loon i.works',i .Worcster,

ai corpolfation "of "Massachusetts ."s ciai m's. (13117139 187) Y This invention-relatest'o fly "shuttle-looms and w to means for {checking "a shuttle therein.

Trouble has "been encountered in the operation of'wide" looms at "high"; speed; "on account -of l the f 5 difficulty in effectively'stopping -a--rapidlymoving and relatively 'heavy--shuttle-without rapid r 'destruction 'of'the picker. "Furthermore, the application of-heavy binder pressure increases the j :"power Tconsumedg-in picking and causes-Tre uent V l breakage' of picker sticks. Alsdin automatic 'looms it-isfou nd"difiiculttostop a-high speed shuttle- "in the "predetermined -positionin i the *shuttle 'box" which is required 'forsuccessful} transfer. 1" 9 It* is theiobject of *my invention to provide an :improv'ed'shuttle checking mechanism by which "pivoted at'26 to abinder supporting member'a'l. These'several supportingmembers'fl'lzare-zpivoted on a single stud -28,--rnotmted:in beaningsninrzthe "frame of-'the drop-boxes 20. I

' A binderspring 30 1 is mountedaon-xeach ump- 'poiting -m'ember 27 and extends rearward through' an opening 32 the-rein'=.toa:engage'rizhe front face "of thej associated binder "25.

'lila'ch binder ifisis "extended-toward :iihevouter at 35 a-ndf-"this extended portion; .is a -spreferdbly shaped "-td'-'substantiallyconform-rte thevtxpered end of thefshuttlesiengaged therebyl {Eachsupporting member 2'1 @is :alsorteextended beyondits 'pivot 28; as indicated 'iatl37wands is 70 provided-With astop-l screw i38 threaded! in'ssaid a highrspeedshuttle-maybe easily and accurate imember'and-securedin adjustedv.positionrby' a "1y 'box'edin apredetermined position; the binder,

"ipressureon-"saidfshuttle being largely released f A further "object 'ofmy-invention is to provide v a single operating means by'which the checking" mechanism at both sides-of the loom may b actuated from a single-cam. My invention further relates-to arrangements and combinations -of"parts which "will be herein-' after described "and more particularly '.-:pointed- "io'ut'in'theappendedclairns. a

A preferred form hi the invention is shown in 30 "the drawings-"in which partly in section; andshowing myinvention ap "plied thereto;

drop-boxes'atpne end'of thelay} looking in the-- "direction'ofithe 'arrow2 in Fig. 1;

"Fig. 3 is a detail-sectional "plan view; taken along the 'line E B'in Fig. 5; V 4 a Fig. 4 is a. still further enlarged front elevation of the drop boxes; p

I Fig. 5 is a partial plan view, looking in the direction of the arrow 5 in Fig. 4, and

Fig. 6 is a diagrammatic view of certain actuating connections to be described. 1 r I Referring to the drawings, I have shown portions of a loom including a loom'side 10 and a lay 11 supported on swords 12 swinging about the usual rock shaft 13 and oscillated by. the usual connecting rods 14. The lay 11 is provided with a lay end 15 having guide-ways 16 and 17 fora .set of vertically shiftable drop boxes 20. The drop boxes 20 are mounted at the upper end of a lifter rod 21, actuated by the usual box-lifting mechanism, not shown.

Fig. 2 is anenlarged front elevation 'of the Each drop box 20 is provided with a binder nut 39. I Thestop screwsii-w uengagezlthe 'front-faceof"an-end p0'rtion 'of ithe: ldIOpLbOXS -'20 and limit forward swinging- :movementzofz the supporting members 2 7 under the infinencexof" 'theispringsi3fl. i

"site enel on the lay- 11. Presser: :arms :44 .andi45' aremountedon the-rock shaftiAoxandsextendmp- 1 Y -w ard"to engage i the bi'nder su'pportingnmembers '27= associatedwith 'theactivei'shuttle.

'--In FigHl'I have shown 'theninventionzapplied Fig; 1 is asideelevationof-portions "of a loom,-

to a .4 x 1*1oom,#in=which :case I the ipresser mm 1 45- engages a sirigle supporting emember 2'1 tau-the Q plain end of the loom, while the presserX-iaa'mM engages anyone I of four 2 supporting :members 27 -at-=t'h drop-box end as shown tinFigrAJ zIt-rwill be i obviousthat the invention mayzbeiused without" change- 'orr a plain orl x 1 loommoreon a pick a'rid-pick loom having a iplmalityzofishnttle boxes at each end of the lay. Also obviously it can be applied at one end only-of either a plain 95 or a drop box loom. *1 i The rock shaft 40 is provided with a rearwardly extending arm (Figs. 1 and 2) which is connected by a link 51 to the front end of a rocking cam lever 52 mounted on a fixed pivot 53 and provided with a cam roll 54 engaging a' double cam 55 on the usual bottom or cam shaft 56 of the loom. This shaft ordinarily makes one revolution for each two picks of the lay and is accordingly provided with two raised portions 5'7 and with two depressed portions 58, all sym- 4 metrically arranged and each portion beingpreferably concentric with the axis of the cam shaft An additional arm 60 (Fig. 2) extends rearand mounting of the binders.

Ward from the rock shaft and is connected by alink 61 to a light spring 62 by which the ofiset upper ends 64 of the presser arms 44 and are held yieldingly against the ends of selected supporting members 27. J 4

The usual protector fingers are mounted on a protector rod 71 (Fig. 6) andengage the extreme end portions of the binders 25 associated with the active shuttle. The protector fingers operate in the usual way and their operation is not modified by any change in the construction Stop rods73 and 74 (Fig. 6) limit the outward movement of the binders when engaged and abruptly displaced outwardly by the boxing of a shuttle.

Having described the details of construction of my improved shuttle-checking mechanism, the method of operation and advantages thereof will be readily apparent. The upper end 64 of each presser arm 44 or 45 engages the outer end portion of a Supporting member 27 which is associated with the active shuttle box.

Assuming that the shuttle, about to enter theshuttle box,'the cam roll 54 will be engaged 'byone of the raised portions 57 of the cam 55,

' thus applying a positive. pressure to the active v relatively heavy resistance of the-binders 25.

supporting member 27. movement of the pivot 26 and also increases the pressure of the associated binder spring 30. The shuttle thus enters the shuttle box against this As the shuttle closely approaches final boxed position, the tapered endof the shuttle, engages the extended portion 35 of the binder, with a tendency to, swing this portion 35 outward and thus increase the pressure of the straight portion of the binder againstthe side of the shuttle. The shuttlev is thus brought to'rest in a predetermined position and is firmly. heldagainst rebound.

As soon as the shuttle is'boxed, the cam roll 54 enters a depressed portion 57 of the cam 55,

' which relieves the positive pressure'on the supporting member 27.

The member 27 is thereuponswung around its pivot 28 by thereaction of the binder spring 3 0,until the stop screw 38 engages the surface of the drop boxes 20. Such movement .of the member 27 substantially re duces the binder pressure on the shuttle S, first by moving the binder pivot 26'forward, and second by reducing the pressure of the binder spring 30. V e

The boxes may then be shifted vertically, as very light pressure is being applied through the presser arm 44, and the shuttle may be picked against the reduced and relatively light binder resistance; This substantially reduces the power This, causes rearward required for picking and also reduces the breakage of picker sticks.

As soon as the shuttle has been picked, pressure is again applied through the presser arms 44 and the parts are again placed in readiness to receive'and effectively box the shuttle.

As previously stated, the invention may be applied to either one or both ends of a loom and may be used with a' single shuttlev box or,

with a plurality of drop boxes as desired. The

invention is simple in construction and reliable leased, and thus determine the minimum binder spring pressure when the shuttleis picked.

.Having thus described my invention and the advantagesthereof, I do not wish to be limited to the details herein'disclosed, otherwise than as set forth in the claims,but what I claim is:-

1. In a loom, a shuttle box, a bindena pivoted supporting member on which said binder is movablymounted, a binder spring mounted on said supporting member and engaging saidbinder, and additional positive means to move said supporting me mber toward said shuttle just prior to the boxing of the shuttle, thereby increasing the binder spring pressure. i

2. In a 100m, a shuttle box, a binder, a'pivoted supporting member on which said binder is mov ably mounted, a binder spring mounted on said supporting member and engaging said binder, and means to move said supporting member toward the shuttle just prior to .the boxing oithe; shuttle and to simultaneously increase the'bind er spring pressure. V

3. In a loom, a shuttle box, a binder, a binder spring, means to move said binder toward the shuttle box just prior to the boxing of the shut'-. tle, and meansv to simultaneously increase the spring pressure on said binder.

4. In a loom, a shuttle box, a binder, a binder spring, means to move said binder toward the shuttle box just prior tothe boxing of the shut? tle, thereby simultaneously increasing the spring pressure on said binder, said means" being thereafter efiective to relieve the binderpressure before the shuttle is picked.

'5. The combination in a loom as setforth in claim 4, in which means is provided for selectively establishing the minimum binder pressure.

' ALBERT A. GORDON. 

